Floor scrubber and buffer

• US 4,150,456 A
• Filed: 07/07/1978
• Issued: 04/24/1979
• Est. Priority Date: 07/07/1978
• Status: Expired due to Term

• Current Assignee: David M. Alvarez, John M. Alvarez
• Original Assignee: David M. Alvarez, John M. Alvarez
• Inventors: Alvarez, John M., Alvarez, David M.
• Primary Examiner(s): Roberts, Edward L.
• Application Number:
  US05/922,767
• Time in Patent Office: 291 Days
• Field of Search: 15/38, 15/48, 15/49 R, 15/50 R, 15/98, 15/246, 15/142
• US Class Current: 15/49.1
• CPC Class Codes: A47L 11/28 Floor-scrubbing machines, motor-driven A47L11/29 takes precedence
• CPC Class Codes: A47L 11/4036 Parts or details of the surface treating tools
• CPC Class Codes: A47L 11/4055 for lifting the tools to a non-working position
• CPC Class Codes: A47L 11/4069 Driving or transmission means for the cleaning tools
• CPC Class Codes: A47L 11/4097 Means for exhaust-air diffusion; Exhaust-air treatment, e.g. air purification; Means for sound or vibration damping

Abstract

A floor scrubber is provided with a propane powered internal combustion engine which is mounted on a wheeled dolly and which is attached by its rotary output shaft to a circular cage provided with a plurality of rotary brushes on the underside thereof. More specifically the output shaft from the internal combustion engine is connected through a pulley arrangement to the various rotary brushes and accordingly the cage and the brushes are driven in counter-rotation. Included in the structure of the dolly is a spring loaded, telescoping support for deploying a serrated clean-out bar which by angular alignment can be placed under the path of advance of the pads in the cage, thus providing a cleaning function therefor. The internal combustion engine, furthermore, is contained in a noise reducing housing which furthermore is provided with a fan for cooling.

Claims

1. In a floor scrubber and buffer assembly including a plurality of brushes adapted for contact with a floor, power means for articulating said brushes and transporting means for translating said assembly along said floor, the improvement comprising:

a circular cage suspended for rotation from said transporting means said cage including a plurality of brush pulleys deployed at substantially equal radial positions in said cage each said brush pulley being connected to one of said brushes and aligned for rotation along axes parallel to the central axis of said cage, a counter pulley disposed proximate the center of said cage and secured to said transporting means and a pulley belt surrounding said brush pulleys and engaging by the exterior periphery thereof said counter pulley;

transmitting means connected between said cage and said power means for transmitting rotary power to said cage; and

a cleaning device mounted for pivotal articulation on said transporting means and including a cleaning bar deployed for translation into or out of the path of said brushes, a support bar connected to vertically extend from said cleaning bar, a tubular housing connected to said transporting means and adapted to receive said support bar in telescopic translation, detent means formed on said housing and support bar for latching said cleaning bar in a first or second position respectively in and out of the path of translation of said brushes and spring means disposed between said housing and support bar for latching said cleaning bar in said first or second position.

2. Apparatus according to claim 1 wherein:

said cleaning bar comprises an elongate structure contelevered from one end of said support bar having an upper surface disposed to intersect the path of advance of said brushes and a plurality of longitudinal grooves formed on said upper surface.

3. Apparatus according to claim 2 wherein:

said power means includes an internal combustion engine and a source of propane gas connected to said engine for providing propane gas for fuel thereto.

4. Apparatus according to claim 3 wherein:

said internal combustion engine includes a shroud surrounding the lateral surfaces thereof.